Electric lamp and support therefor



Oct. 9, 1928.

H. M. KORETZKY ELECTRIC LAMP AND SUPPORT THEREFOR Filed Aug. 20, 19.26

Patented Get. 9, 1928.

esa-483 PATENT OFFICE.

HARRY M. KORETZKY, or HOBOKEN, new JERSEY.

ELECTRIC LAMP AND surronr rnnnnron.

Application filed August 20, 1926.v Serial No. 130,506.

My present invention relates to a convenient form of self-contained electric lamp which can be taken apart so as to yield on the one hand a-base capable of use as an ash tray and on the other hand a portable flash light.

The invention also comprises certain preferred details of construction hereinafter fully described and set forth.

The invention is illustrated in'a preferred form by way of example in the accompanying drawings wherein F igurel is a view of the entire combination in elevation, F1gure2 1s a similar view of the lamp base 1n position for use as an ash tray, Figure 3 is a View inlongitudlnal section of the upper and lowerparts.

of the flashlight separated andliigures, 4 and 5 are upperand lower plan views respectively of the preferred form of removable lampsupportingdisc;

The flash light proper is preferably constructed according to "the principles of that" I 19 at the lower end of the flashlight.

well known type inwhich a metallic outer cylindrical casing carries the current and closes the circuit through the bulb when alight.

At is shown the usual cylindrical outer casing, furnished at one end with a screw cap 11 carrying the usual'reflector and lens, whereby, preferably, thefocus of the light may be adjusted at will in a well known manner. i

Within the inetalcasing 10 are carried the I usual group of battery cells, loosely assem-e bled end to end and each .covered with cardboard or other insulation in a manner well known. The zinc cup of each cell is bareat the bottom, and the carbon electrode 13 of each cell touches the zinc bottom of the next above it. p p

The usual electric bulb 14 screws into a socket at the center of a bulb-supporting disc 15 whose periphery is threaded, as shown, so as to screw down into the threaded upperend 16 of the cylinder 10; Finger holds 17 are: bent upward from the fiat surface of the disc 15 to facilitate screwing the disc down into place.

A spiral spring 18 is interposed between the disc 15 and the insulating seal that closes the top of the uppermost battery cell The pressure of this spring pushes the entire battery down against the metal cap 19 wh1ch closes the lower end of the casing 10, being threaded thereon as clearly shown in the lower part of Figure 3,

- While the'threaded cover 19 When the lamp is unlighted, as shown in Figure 3, the carbon 13 does not touch the central terminal 20 of the. bulb 14. By screwing the cap19 furtheron, however, the battery is moved upward within the casing 10 until the carbon 13 touches the terminal 20, when circuit will be closed through the lamp bulb 14, in a well known manner, to light the same. Flashlights operated on this general principle are well-known in this art, and the same are not broadly claimed herein.

In Figure 1, the form of flashlight so far described is shown mounted upon a base,

preferably comprising an inverted basin 21 furnished with a number of legs 22, preferably three as shown. springs with flaring tips 23 to facilitate forcing down between them the lower end of the flashlight, so that it assumes the position shown in Figure 1, wherein the springs 22 closely embrace and grip the threaded-cover There is thusconstituted a standing electric lamp which canbe instantly lighted or extinguished by simply turning the casing slightly one way or the other. As the spring legs 22 hold the cover 19 fixed. this revolution of the casing 10 will cause the lamp bulb 14 to move up or down, as the case may be, thus opening or closing atwill the contact at 20.

Upon removingthe. flash light, by with-. drawing the cover 19 from between the sprin s 22, the base may be inverted, as shown These legs are stifi in Figure 2, and, standing upon the legs 22,

maybe used as an ash tray.

structed in any convenient manner to make possible'the operation above set forth, I prefer theconstruction shown in the lower. part of Figure?) whereby the operation 'of'the flash light, when separated from its base, may be carried out either, as above described by turning the cap 19 or in the manner about to be described.

The central portion of the cap 19 is spun inwardto form a tubular socket 24, within which plays a sliding button 25, pressed outward by a spiral spring 26 within the socket 24. The inner periphery of the button 25 is flanged outward to form a. circular lip 27 which limits the outward movement of the button.

may be oon-' Now,by turning the cap 19 until the circoil; is nearly closed at 20,the lighting of the ing inward 0n the button 2st and pushing the battery toward the bulb to make contact at 20. Thus the light becomes available for producing momentary flashes of light, as distinguished from producing a constant light, since mere removal of pressure by the thumb or finger on the button 2t will permit the spring 18 to break the circuit at 20 and extinguish the light.

While my broad invention is not necessarily confined to any particular mode of securing in place the spring 18, whereby the battery is normally pressed away from the bulb 1d, one feature of my preferred form comprises an improved structure for this purpose illustrated in Figures 3- to.5.

For this purpose a channel 28, semicircular in cross section is formed by pressure in the disc 15. This channel is concave downward and forms almost a complete circle. At diametrically opposed points, however, the channel is interrupted by pressing two small portions 29, 30, downwardly as shown in Figure 5, thus forming two narr w retaining bands.

The diameter ofthe circle described by the channel 28 is the same as that of the spiral of the spring 18, and this latter is held in place i by msertmg one end thereof under one ofthe bands 29 or 30, and turning the spring so NVhat I claim is is plainly shown in Figures 3 and 4c.

Various changes may be made in the construction of my improved lamp, and I do not limit myself to the details shown and described.

1. A self-containedelectric lamp having an external casing and a terminal threaded cap having means to'control the lamp circuitby relative rotatory movements of said casing and cap; in combination with an emptybowl-shaped base having springs adapted to receive said cap between them with afirm gripping pressure, said springs being adapted to afford a stable support for the base when the latter is inverted. i

r 2, In a self-contained electric lamp, an outercasing, a movable battery therein, a spring at the top ofthe battery tending to push the same out of operative contact, a cap at'therea'r end of thecasi-ng, a short central tube extending inwardly onsa'id' cap,-a spiral spring insai'd tube, and a hollow cup within said spring engaging the same, and adapted to operate as a push button;

In testimony whereof I have hereto affixed my signature on this'29th day of J uly, 1926. l

' HARRY M. KORETZKY. 

